Multi-point mechanical large pipeline correcting and assembling device

Abstract

The utility model provides a multi-point mechanical large-scale pipeline correcting and assembling device. The multi-point mechanical large-scale pipeline correcting and assembling device comprises an adjusting nut, an ejector rod, a positioning rod and a base. During use, the adjusting nut is twisted through a wrench to enable the ejector rod to stretch out and draw back so as to abut against the pipe wall, deformation correction in different directions can be achieved by adjusting different ejector rod nuts, the ejector rod is arranged to be of a detachable assembly type structure, the device is portable, easy to use and convenient to disassemble and assemble, and multi-point simultaneous correction can be achieved according to actual conditions. Compared with a traditional device, the device provided by the utility model can be assembled on the ground in the pipeline prefabricating process, the pipe lifting and underlaying requirements are not needed, a lot of mechanical cost is saved, the device can be operated by a single person, manpower is saved, and meanwhile, the efficiency can be improved by more than 7-8 times.

Description

Technical Field

[0001] The utility model relates to the field of large-diameter pipeline construction, in particular to a multi-point mechanical large-scale pipeline correction and assembly device. Background Art

[0002] As domestic refining and chemical companies are currently upgrading their production capacity in large quantities, the diameter of pipelines used in the equipment and in the construction of long-distance pipelines is getting larger and larger, and large-diameter pipelines are inevitably deformed. When large pipelines are constructed, it is difficult to assemble when the pipe mouth cross-section is elliptical, and the efficiency is low. With technological innovation, traditional methods are gradually eliminated. Methods such as "tube wall welding top screw method and tube wall welding gantry / pin method" cannot meet market quality requirements and damage the parent material structure. Therefore, it is urgent to design a large-diameter pipeline docking device that can meet the production requirements of safety and quality first and meet market demand. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a multi-point, mechanical large-scale pipeline correction and assembly device, which includes a push rod, an adjusting nut, a positioning rod and a base; the base is movably connected to the lower end of the positioning rod; the upper end of the positioning rod is provided with an opening, and the interior is a hollow structure, in which the push rod is accommodated; an adjusting nut is provided between the push rod and the positioning rod; the adjusting nut is threadably connected to the push rod through the external thread on the push rod.

[0004] Furthermore, a rolling bearing is arranged in the opening of the positioning rod. When the adjusting nut is twisted with a wrench to achieve the extension and retraction of the push rod, the push rod does not need to rotate. The push rod and the positioning rod achieve relative rotation through the rolling bearing and the adjusting nut, thereby reducing friction, thereby saving effort in twisting the adjusting nut when correcting the pipe mouth.

[0005] Furthermore, a hexagonal structure is provided at the lower end of the positioning rod, and a positioning steel ball is provided on the hexagonal structure.

[0006] Furthermore, the base is a polygonal structure.

[0007] Furthermore, the base is a hexagonal structure.

[0008] Furthermore, any side surface of the base is provided with a hexagonal hole matching the positioning rod, and a steel ball positioning structure is provided in the hole.

[0009] Furthermore, the positioning rod is snap-connected to the base via a steel ball positioning structure.

[0010] Furthermore, the number of the positioning rods is n (n≧2) groups.

[0011] Furthermore, the adjusting nut and the push rod adopt high-strength screw rods, and the threads can withstand heavy-load push forces to achieve the correction of pipelines with larger wall thicknesses.

[0012] A more specific solution of the utility model is a multi-point, mechanical large-scale pipeline correction and assembly device, which is designed as a detachable assembly structure, is portable and easy to use, and is convenient to disassemble and assemble. It can also perform multi-point correction at the same time according to actual conditions; using a wrench to twist the adjusting nut can make the push rod extend and retract, thereby supporting the pipe wall, and adjusting the nuts on different push rods can achieve deformation correction in different directions; it is also possible to install only 2 groups of push rods or 3 groups of push rods according to actual needs.

[0013] The working principle of this equipment is as follows: a steel ball positioning structure with a socket wrench structure is designed on the base to achieve quick insertion and removal of the positioning rod. The base is designed as a hexagonal structure to achieve simultaneous adjustment of multiple points.

[0014] Beneficial effects:

[0015] 1. Compared with the current conventional methods, this pipeline correction device can be easily operated by one person, saving manpower and increasing efficiency by more than 7-8 times.

[0016] 2. The traditional external aligner requires the pipe to be hoisted to a certain height before it can be assembled. However, by using the pipe correction and assembly device of the utility model for roundness calibration, the pipes can be assembled on the ground during the prefabrication process, and there is no need to hoist the pipes to a certain height and place them under pads, thus saving a lot of machinery costs.

[0017] 3. The steel ball positioning structure of the socket wrench structure allows for quick assembly and disassembly of the base and push rod assembly. After disassembly, the volume is small and easy to carry and store. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the assembled device for a multi-point, mechanical large-scale pipeline correction group.

[0019] Figure 2 Front cross-sectional view of the assembled device for a multi-point, mechanical large-scale pipeline correction group.

[0020] Figure 3 Oblique view of the assembled device for a multi-point, mechanical large-scale pipeline correction group.

[0021] Figure 4 A diagram of the working status of a multi-point, mechanical large-scale pipeline correction group device simulating the device in the pipeline.

[0022] Figure 5 A cross-sectional view of the working status of a multi-point, mechanical large-scale pipeline correction group device simulating in the pipeline.

[0023] Figure 6This is a front view of a multi-point, mechanical large-scale pipe alignment device with only three sets of push rods installed.

[0024] Figure 7 This is a front cross-sectional view of a multi-point, mechanical large-scale pipe correction device with only three sets of push rods installed.

[0025] Figure 8 This is a front view of a multi-point, mechanical large-scale pipe alignment device with only two sets of push rods installed.

[0026] Fig. 9 This is a front cross-sectional view of a multi-point, mechanical large-scale pipe correction device with only two sets of push rods installed.

[0027] Fig.10 This is a disassembly status diagram of a multi-point, mechanical large-scale pipeline correction group device.

[0028] Fig.11 This is a structural diagram of a multi-point, mechanical large-scale pipeline correction device assembly.

[0029] In the figure: push rod-1, adjusting nut-2, positioning rod-3, base-4, rolling bearing-5, positioning steel ball-6. DETAILED DESCRIPTION

[0030] The technical solution of the utility model is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 11 As shown: a multi-point, mechanical large-scale pipeline correction assembly device, including a mandrel 1, an adjusting nut 2, a positioning rod 3 and a base 4; the upper end of the positioning rod 3 is provided with an opening, and the interior is a hollow structure, in which the mandrel 1 is accommodated; an adjusting nut 2 is provided between the mandrel 1 and the positioning rod 3; the adjusting nut 2 is threadedly connected to the mandrel 1 through the external thread on the mandrel 1; the base 4 is movably connected to the lower end of the positioning rod 3. Specifically, the base 4 is a hexagonal structure, and hexagonal holes are provided on the six sides of the base 4, and steel ball positioning structures are provided in the holes; a hexagonal structure matching the hexagonal holes on the side of the base 4 is provided at the lower end of the positioning rod 3, and a positioning steel ball 6 is provided on the hexagonal structure; the positioning rod 3 is snap-connected to the base 4 through the steel ball positioning structure.

[0032] On the basis of the above, the adjusting nut 2 and the push rod 1 adopt high-strength screw rods, and the threads can withstand heavy-load push forces to achieve the correction of pipes with larger wall thicknesses.

[0033] like Figures 3 to 9As shown: Assemble the correction group device and put it into the pipe mouth. Use a wrench to twist the adjustment nut 2 to make the push rod 1 extend and retract, so as to support the pipe wall. Adjust the nuts on different push rods to achieve deformation correction in different directions. You can also install only 2 or 3 groups of push rods according to actual needs.

[0034] On the basis of the above, a rolling bearing 5 is arranged in the opening of the positioning rod 3. When the adjusting nut 2 is twisted with a wrench to realize the extension and retraction of the push rod 1, the push rod 1 does not need to rotate. The push rod 1 and the positioning rod 3 realize relative rotation through the rolling bearing 5 and the adjusting nut 2, thereby reducing the friction, thereby saving effort in twisting the adjusting nut 2 when correcting the pipe mouth.

[0035] The above embodiments and descriptions are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, which are within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-point, mechanical large-scale pipeline correction and assembly device, characterized in that: The device includes a push rod, an adjusting nut, a positioning rod and a base; the base is movably connected to the lower end of the positioning rod; the upper end of the positioning rod is provided with an opening, the interior is a hollow structure, and the push rod is accommodated in the hollow structure; an adjusting nut is provided between the push rod and the positioning rod; the adjusting nut is threadably connected to the push rod through an external thread on the push rod.

2. The device according to claim 1, characterized in that A rolling bearing is arranged in the opening of the positioning rod.

3. The device according to claim 2, characterized in that A hexagonal structure is arranged at the lower end of the positioning rod, and a positioning steel ball is arranged on the hexagonal structure.

4. The device according to claim 3, characterized in that The base is a polygonal structure.

5. The device according to claim 4, characterized in that The base is a hexagonal structure.

6. The device according to claim 5, characterized in that Any side surface of the base is provided with a hexagonal hole matching the positioning rod, and a steel ball positioning structure is arranged in the hole.

7. The device according to claim 6, characterized in that The positioning rod is buckled and connected to the base through a steel ball positioning structure.

8. The device according to any one of claims 1 to 7, characterized in that: The number of the positioning rods is n (n≧2) groups.

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